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Revert "Perf: arm64: restore registers after reset"

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This reverts commit 6470f7956a
("Perf: arm64: restore registers after reset")

This change is being reverted so that it can be replaced
by equivalent functionality from upstream.

CRs-Fixed: 1008368
Change-Id: Ieaa6da68173aaf31c8a38bce64f1bc46bae957c4
Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>
This commit is contained in:
Jeremy Gebben 2016-04-26 09:40:31 -06:00 • committed by Kyle Yan
parent 4da4b1181e
commit f5034a4732
2 changed files with 2 additions and 4 deletions
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1
arch/arm64/kernel/perf_debug.c
View file

@ -31,7 +31,6 @@ static char *descriptions =
"10 Perf: arm64: tracectr: initialize counts after hotplug\n"
"11 Perf: arm64: Refine disable/enable in tracecounters\n"
"12 Perf: arm64: fix disable of pmu irq during hotplug\n"
"13 Perf: arm64: restore registers after reset\n"
"15 Perf: arm64: make debug dir handle exportable\n"
"16 Perf: arm64: add perf trace user\n"
"17 Perf: arm64: add support for kryo pmu\n"

5
drivers/perf/arm_pmu.c
View file

@ -858,16 +858,15 @@ static int perf_cpu_pm_notifier(struct notifier_block *self, unsigned long cmd,
case CPU_PM_ENTER_FAILED:
case CPU_PM_EXIT:
if (cpu_has_active_perf(cpu, cpu_pmu) && cpu_pmu->reset)
cpu_pmu->reset(NULL);
if (cpu_pmu->restore_pm_registers)
cpu_pmu->restore_pm_registers((void *)lcpu);
if (cpu_has_active_perf(cpu, cpu_pmu)) {
if (cpu_has_active_perf(cpu, cpu_pmu) && cpu_pmu->reset) {
/*
* Flip this bit so armpmu_enable knows it needs
* to re-enable active counters.
*/
get_cpu_var(from_idle) = 1;
cpu_pmu->reset(NULL);
pmu = &cpu_pmu->pmu;
pmu->pmu_enable(pmu);
}